12456013543 has 8 divisors (see below), whose sum is σ = 13269635568. Its totient is φ = 11651382144.

The previous prime is 12456013541. The next prime is 12456013547. The reversal of 12456013543 is 34531065421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12456013543 - 2¹ = 12456013541 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12456013499 and 12456013508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12456013541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2244796 + ... + 2250337.

It is an arithmetic number, because the mean of its divisors is an integer number (1658704446).

Almost surely, 2^12456013543 is an apocalyptic number.

12456013543 is a deficient number, since it is larger than the sum of its proper divisors (813622025).

12456013543 is a wasteful number, since it uses less digits than its factorization.

12456013543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4495313.

The product of its (nonzero) digits is 43200, while the sum is 34.

Adding to 12456013543 its reverse (34531065421), we get a palindrome (46987078964).

The spelling of 12456013543 in words is "twelve billion, four hundred fifty-six million, thirteen thousand, five hundred forty-three".